Pouliasis, E. Georgantopoulos, I. Bonanos, A.Z. Yang, M. Sokolovsky, K.V. Hatzidimitriou, D. Mountrichas, G. Gavras, P. Charmandaris, V. Bellas-Velidis, I. Spetsieri, Z.T. Tsinganos, K., Robust identification of active galactic nuclei through HST optical variability in GOODS-S: Comparison with the X-ray and mid-IR-selected samples, Monthly Notices of the Royal Astronomical Society, (487), 4285-4304, 2019, Oxford University Press, 0035-8711, 1365-2966